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Offline Mick Oliver

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Castle Coombe noise limits
« on: January 07, 2019, 01:35:31 PM »
I found this on the web site for Castle Coombe and it shows that the RR will not pass with a short exhaust and I am not sure if it applies to the R as well but it is the same system for the exhaust.
Interesting from there comments but say Standard may be OK



In our experience the following machines may NOT pass our strict limits:

Any make & model of bike with short type side silencers
BMW S1000 RR
Ducati 748/749/916/996/998/999, fitted with Termignoni open pipes
(but any of the above with standard pipes SHOULD pass)
Ducati 1098R
Ducati 1198
Ducati Multistrada (2011 + 2013)
Ducati Panigale - all models
Honda CBR1000RR: 2008-2015
Kawasaki ZX10 - 2009 and 2010 model
KTM RC8
Suzuki GSXR600 K6
Suzuki GSXR600 K7
Suzuki GSXR 750 K6
Suzuki GSXR 750 K7
Suzuki GSXR1000 K6 - 2006 model with standard exhaust
Suzuki GSXR1000 K7
Suzuki GSXR1000 K8
Triumph 675 - 2009 model (short type side can)
Yamaha R6 2006-current
Yamaha R6 - 2009 model (short type side can)
Yamaha R1 2008-current

Offline S1000R

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Re: Castle Coombe noise limits
« Reply #1 on: January 07, 2019, 02:54:55 PM »
Went there a while back with my CBR1000RR (which is on that list). From the look on the noise testers face and his body language I suspect that it was actually over the limit but he just waived me an "ok" and a nod. Don't think I was the only one who just scraped through though. If they didn't give some leeway I think half the group would have gone home which wouldn't have been good for the organisers.

Offline Alan

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Re: Castle Coombe noise limits
« Reply #2 on: January 07, 2019, 04:47:20 PM »
I ran my 2010 ZX10R there many times which is on the list.  Always passed with the standard exhaust at 103db.  As I am only 12 miles from the circuit I will be riding up there once it warms up in spring to get the S1000R noise tested, but I suspect it will be OK.  The RR will be noisier than the R as it is measured at 3/4s throttle, so as the RRs red line is higher so will the revs at which it is noise tested.

Offline zombie

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Re: Castle Coombe noise limits
« Reply #3 on: January 07, 2019, 11:49:14 PM »
Kind of ridiculous that just about every sport or superbike made from the mid 2000's onward won't pass their testing with stock exhaust.

Offline Alan

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Re: Castle Coombe noise limits
« Reply #4 on: January 08, 2019, 12:08:01 AM »
Blame the new residents in the village.  They bought houses close to a racing circuit that has been there for decades and then complained to the local council about the noise.  The result is one of the strictest noise tests in the country.  Less than 105db at 3/4s maximum revs.  With 13,000 + rpm being common on sports bikes that means being tested at 10,000rpm.  At those revs, the mechanical engine noise and induction roar adds significantly to the noise levels which means anything other than a good standard exhaust will fail the test.  Most bikes with a standard exhaust will pass, but anyone with an aftermarket exhaust or a de-catted exhaust is going to be disappointed.  It is my local circuit so it is the one I use most as I can ride there in about 20 minutes, but it is predominantly a right hand circuit so it will destroy a tyre on the right shoulder very quickly.  It is quite a fast circuit with 150mph+ achievable on the main straight (which actually has quite a kink in it at those speeds )

 


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